All UNIX commands for SDET and Manual tester Part-1

System Information Commands
uname -a	shows Linux system info
uname -r	shows kernel release info
cat /etc/redhat-release	shows installed redhat version
uptime	displays system running/life time
hostname	shows system host name
hostname -I	shows ip addresses of the host
last reboot	displays system reboot history
date	displays current date and time
cal	displays monthly calendar
mount	shows mounted filesy-stems
User Information Commands
id	shows user&group ids of the current user
last	shows the last users logged on
whoami	shows who you are logged in as
who	shows who is logged into the system
w	shows who is logged in and what they do
groupadd test	creates group “test”
useradd -c “GK” -m Gokhan	creates “Gokhan” account with comment “GK”
userdel Gokhan	deletes account “Gokhan”
usermod -aG Networkers Gokhan	adds account “Gokhan” to the “Networkers” group

 

File Commands
ls -l	shows file type and access permission
ls -a	lists also hidden files
ls -al	lists files and directories details
pwd	shows present directory
mkdir directory	creates a directory
rm xyz	deletes file xyz
rm -r /xyz	deletes directory /xyz and its contents recursively
rm -f abc	forcefully deletes abc file without confirmation
rm -rf /xyz	forcefully deletes directory /xyz recursively
cp aaa bbb	copies aaa file to bbb file
cp -r /xxx /yyy	copies /xxx directıry to /yyy directory
mv aaa bbb	renames or moves file aaa to file bbb
touch abc	creates an empty file named abc
cat abc	used to view file abc
less abc	browse through a text file abc
head abc	displays first 10 lines of file abc
tail abc	displays last 10 lines of file abc
tail -f abc	displays last 10 lines of file abc and follow it as it grows
tail -F abc	outputs last lines of abc as it changes
file abc	gets type of abc
gpg -c abc	encrypts file abc
gpg abc	decrypts file abc
dir	shows files in the current directory
put abc	uploads file ‘abc’ from local to remote device
get file	downloads file ‘abc’ from remote to local device

 

File Permission
chown user	changes ownership of a file/directory
chown user:group filename	changes user and group for a file or directory
File Permissions	r (read) permission, 4
	w (write) permission, 2
	x (execute) permission, 1
	-= no permission
File Owner	owner/group/everyone
File Permissions Examples	777 | Owner, Group, Everyone has rwx permissions
	744 | Owner has rwx permission, Group, Everyone has r permission
	755 | Owner has rwx permission, Group, Everyone has rx permissions
	776 | Owner, Group has rwx permission, Everyone has rw
File Owner	owner/group/everyone
ls Options
-a	shows all (including hidden)
-R	recursive list
-r	reverse order
-t	sort by last modified
-S	sort by file size
-l	long listing format
-m	comma--separated output
-Q	quoted output

 

All UNIX commands for SDET and Manual tester Part-2

All UNIX commands for SDET and Manual tester Part-3